"I'm in the film more than I was," Hiddleston confirmed to The Huffington Post, revealing that some of the new sequences filmed included scenes that he had pitched himself.

"We were adding new stuff, so that was fun for me. And some of the things were scenes I'd actually pitched for a long time ago.

"The thing about Kevin Feige is he's very, very open and collaborative. And he and Louis D'Esposito, who run the studio - I find it very admirable that they're open to ideas. Possibly more now than they would have been the first go-around.

"Chris Hemsworth and myself have lived inside these characters for two movies now and we've been inside every scene and we know what works and we know what doesn't work. And also, we know what we've done and what we shouldn't try to repeat."

Hiddleston teased that the new scenes would touch on "new iterations of the relationship between Thor and Loki".

The Dark World sees Thor reluctantly asking for Loki's help to fight against Christopher Eccleston's Malekith.

Thor: The Dark World will be released in the UK on October 30, and in the US on November 8.